The English translation of the Bhikkhu-vibhanga: the first part of the Suttavibhanga, which itself is the first book of the Pali Vinaya Pitaka, one of the three major ‘baskets’ of Therevada canonical literature. It is a collection of rules for Buddhist monks.
The English translation of the Vinaya-pitaka (first part, bhikkhu-vibhanga) contains many...

Monks’ Training (Sekhiya) 35

‘Not having chosen from the top will I eat almsfood,’ is a training to be observed.”

One should eat almsfood not having chosen from the top. Whoever out of disrespect eats almsfood having chosen from the top, there is an offence of wrong-doing.

There is no offence if it is unintentional, if he is not thinking, if he does not know, if he is ill; if among an insignificant remainder he eats, having selected,[3] having chosen from one side; if there are accidents, if he is mad, if he is the first wrong-doer.